{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical", "Disease"], "input": "A case of thoraco - abdominal rigidity leading to respiratory failure is described in the post - operative period in an elderly patient who received a moderate dose of fentanyl ."}
{"Chemical": ["fentanyl"], "Disease": ["rigidity", "respiratory failure"]}